There is considerable value in choosing a smart mate. The suggestion that mate choice has thus shaped the evolution of cognition has been around since Darwin's time, but testing this hypothesis is difficult. Chen et al. found that female budgerigars...

In a new Science study, male budgie birds who showed smarts became more attractive in the eyes of female counterparts—behavior which could underlie the evolution of cognitive performance in non-human animals. bit.ly/2Rnf1Q4pic.twitter.com/8SYZbAdcZv